As Hurricane Elmer hits, Judy, Stink, and the entire Moody clan hunker down and ride out the storm, but when the power goes out, Grandma Lou proposes some activities to pass the time in the dark.
All Judy Moody hears is her brother Stink wants snow for Christmas, but it hasn't snowed in Virginia on Christmas Day for more than a hundred years. So Judy, with a little help from Jack Frost, makes a Christmas miracle.
When a puppy who is being trained as a police dog goes missing, third-grader Judy forms a detective agency to solve the mystery, imitating her literary heroine, Nancy Drew.